Do Subaru heads warp?

Subaru heads can warp, but it is not a common occurrence. The design of Subaru engines is known for their compact and strong construction, which makes them highly resistant to head warping. However, in certain cases, such as severe overheating or coolant failure, the heads can become warped. It is important to note that head warping is not exclusive to Subaru engines and can happen in any type of engine.
If you suspect that your Subaru’s heads are warped, it is recommended to have them inspected by a qualified mechanic. They can assess the condition of the heads and determine if machining or replacement is necessary . Machining the heads can sometimes restore them to acceptable specifications, but if the damage is severe, replacement may be required.
It’s worth mentioning that head gasket issues are often associated with Subaru engines. While head gasket failure can be a result of various factors, including overheating, it does not necessarily mean that the heads are warped. A thorough inspection by a professional is necessary to accurately diagnose the issue.
In summary, while Subaru heads can warp in certain circumstances, it is not a common occurrence. If you suspect head warping, it is best to consult with a qualified mechanic for a proper diagnosis and appropriate course of action.

What year Subaru engines are bad?

The main problem years are 1996 through 2004. The most common engine to have head gasket failures is the naturally aspirated (non turbo) Subaru 2.5 L four cylinder engine, commonly known as the EJ25 motor. The problem is not the head gasket but rather the engine block.

How long do Subaru head gaskets last?

between 100,000 and 150,000 miles
The original head gaskets on a Subaru engine have a life between 100,000 and 150,000 miles. Most replacement head gaskets last just as long. Regular coolant replacement and thermostat replacement can help prolong Subaru head gasket life.

What Subaru models are failed?

Subaru Recalls Sedans and SUVs to Fix Backup Cameras and Reverse Lights. Subaru is recalling over 95,000 Crosstrek SUVs from the 2021 model year, Forester SUVs from the 2022 model year, and Legacy sedans and Outback SUVs from the 2021 through 2023 model years.

Are Subarus bad for head gaskets?

Subaru’s horizontally opposed boxer engine design is unique and sets it apart from many other automakers. While this design offers advantages in terms of balance and handling, it can also lead to increased stress on certain engine components, including the head gasket.

What car blows the most head gaskets?

• 2011 Chevrolet Cruze. Typical mileage: 107,000 to 143,000 miles.
• 2011 BMW 3 Series. Typical mileage: 72,000 to 122,000 miles.
• 2014 BMW X1. Typical mileage: 76,000 to 82,000 miles.
• 2011 Buick Lucerne. Typical mileage: 101,000 to 162,000 miles.
• 2011 Subaru Impreza.
• 2012 BMW 5 Series.
• 2012 BMW X3.
• 2013 Mini Cooper/Mini Clubman.

What is the head warp tolerance for a Subaru?

Subaru is very specific about the allowable amount of cylinder head and engine casting warpage. It states that warpage must be no greater than . 035mm (. 0012 in.).

How do you tell if I have a warped head?

Place a straightedge on the cylinder head diagonally from corner to corner. Set your feeler gauge at . 003 inch, and place the gauge between the straightedge and the cylinder head. If the feeler gauge fits in the gap, then your cylinder head is warped and must be machined flat.

What were the bad years for Subaru?

Subaru Outback Years to Avoid

• 1996 – 2008. Image Courtesy: Subaru. These Outbacks had an issue with the head gasket and engine overheating.
• 2010 – 2013. Outback from this period had issues with transmissions.
• 2015 – 2019. Unexpected acceleration issues, which are safety hazards, were reported by owners.

Is a warped head fixable?

Repair depends on how warped. The remedy is to shave the head surface flat. This is only possible if the warping is less than some amount in thousandths of an inch. The competent machine shop that can do this will tell you if they can save the head.

What year Subarus had head gasket problems?

A number of Subaru models are affected, however the most common failures include the 2.5 Liter SOHC engine used in the late 1999-2004, Forester, Impreza, Outback and Legacy. Signs and symptoms of engine head gasket failure include: Engine overheating.